Machine for treating seams



NOV. 7, B' KOZMER MACHINE FOR TREATING SEAMS Filed March 18, 1931 5 Sheets-Sheet 2 Z22/VENTO@ Nov. 7, 1933. B. KozMER MACHINE FOR TREATING SEAMS Filed March 18, 1931 3 Sheets-Sheet 3 Patented Nov. 7, 1933 UNITED STATES PATENT oFFicE 19 Claims.

My invention relates to a machinefor treatingseams such as the seams in leather goods wherein the portions of leather are sewed together.

One of theobjects of my invention is to provide a machine for rolling, pounding, and heating the seams. The purpose of heating sea-ins in leather goods in this manner is to reduce the size of the-seams,` particularly in basketV balls, footballs, and the like.

A further object of the invention is to provide improved mechanismfor treatingthe seams which mechanisrnisadapted to simultaneously roll, pound and heat theseam. I have found by experience that this is-the most successful manner in which seams can be satisfactorily reduced.

A further object of the invention is to provideV armachine of this type provided with a pivctally mounted roller adapted to be pounded at a` high rate of speed which pounding is thereby directly transmitted to the seam.

A further object is to provide an improved heating roller construction wherein live steam is continuously brought adjacent the surface of the roller.A

Further objects and advantages will. become readily apparent from the following description reference being had to the accompanying sheets of drawings wherein like numbers refer to like parts throughout the entire specification. ln the drawings Fig. 1 is a front perspective view of niy iinproved invention;

Fig. 2 is a rear elevation View somewhat .diagrammatic illustrating the clutch and vbrake mechanism and omitting generally all of the parts in the background;

Fig. 3 is an enlarged view of the operating rollers and adjacent parts, portions thereof being broken into sections to more clearly show other parts;

Fig. 4 is a vertical sectional View taken on the line lL-4V of Fig. 3;

Fig. 5 is a plan sectional view taken on the line 5-5of Fig. 4; Y Y

Fig. 6 is a full size detailview of the co-operat'-,

Fig. 8 isa full size detailview ofa modified;

form of pounding roller.

In. describing my. improved machinerI shall:

`upon suitable legs 12.

rst explain that in manufacturing footballs, n

' of a football constructed in this manner comprising the leather portions A-A lining B-B and their thread C sewed together and formingfthe usual seam produced by joining the portions A-A in this manner. As can be seen from the drawings the seam presents an inwardly extending portion and a considerably inwardly turned Vgroove in the outer face of the article.

The object of the present invention is to provide a machine for pounding down this seam to give the outer surface of the article an unbrokeny appearance and to reduce the sizeof the inwardly turned seam.

My machine may comprise a table 10 supported The legs l2 are joined near their'lower ends by parallel supporting angles lll. A pair of cross bars 16 bolted to the top of the supporting angles le form a support upon which anelectric motor 18 is mounted.

lotor 18 may be provided with electric currentfrom any suitable source and is further provided with a drive shaft 2li upon which a driving pulley 22 is mounted. Pulley 22 is connected with a driven pulley 2liV supported above table lo and riven oy a continuous belt 26. Pulley 24 is slidably mounted upon a shaft 28 journalled in a supporting standard 3i). A clutch 32 keyed to the shaft 2S is mounted upon one side of pulley 24 and a brake drum 34; and a sprocket wheel 36= both keyed to shaft 28 are mounted upon the opf posite side of pulley 24. A clutch operating lever 38 is pivotally mounted upon standard 30 and through links 4i), and 441, isrconnected with a foot pedal 45 whereby the clutch is shiftable either to engage pulley 24 or to disengage pulley 24 as desired.

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A chain 48 gea-red to-thesprocket wheel 36 is adapted to engage a drivenvsprocket wheel r59 keyed to shaft 52. Shaft 52 is journalled in a pair of uprightbrackets 54 and 56 mounted upon a pivoting base 58. Shaft 52 has formed at one end a pinion 60 which meshes-with a'y large gear 62 and is provided at'its opposite end with a cam member 64.

Pivotingbase 58 is supported at its rear end uponabolt Gfextending through a pair of upright. supports 68 secured to ther toprof'table 10 and normally pressed downwardly at its front:

end by compression spring 59. The front end of base 58 is adapted to overlie a cam shaft member 69 formed on the end of a shaft 70 which is connected to treadle 71 by a link 72. Thus by stepping upon treadle 71 and partially rotating cam 69 the front end of base 58 can be raised upon its pivot 66 for the purpose, usually, of separating the work rolls of the machine.

Gear 62 is mounted upon shaft 74 which is journalled in suitable bearings 75 and 78 in the standards 54 and 56. Shaft 74 carries at its outer end upon a reduced portion 75 thereof a hardened steel roller 77, a pair of washers 78, and av knurled or grooved roller S0 which are securely fastened thereon by the nut 81.

A housing 81 is supported in a vertical position upon a flattened pad 82 of standard 54. The housing supports therein a reciprocating bar 83 which has a stud portion 84 extending through the bottom thereof, and upon the lower end of which a hammer unit 85 is securely mounted. Bar 83 has a projection 83a secured to the back thereof in the plane of the cam member 64 keyed to shaft 52. Thus as shaft 52 revolves carrying cam 64 the bar 83 will be intermittently raised and allowed to drop in accordance with the travel of projection 83a upon the periphery of cam 64. Bar 83 is suitably guided in its oscillating movement by guides 85 and 86. A plurality of springs 87 are positioned above the upper end of bar 83 bearing against a tension plate 88 carried by a bolt member 89.

A collar in which the bolt 89 is screw threadedly mounted carries at its upper end a hand wheel 91 by means of which the tension upon springs 87 may be suitably regulated. The stud portion 84 of bar 83 extends through a suitable bushing 92 and gland 93 mounted in the lower wall of casing 81. I The machine as thus far described comprises a mechanism for driving roller at a desired rate of speed and through the medium of pinion 61 and shaft 52, hammer is reciprocated to produce a continuous poundine effect upon the roller. Due to the unique method of mounting the base 58 it can readily be seen that this continued pounding has no deteriorating effect-upon the mechanism.

The lower roller its mechanism will now be described. A platform extends along the side of the machine, being supported by suitable brackets 101 fastened by the legs 12. An upwardly tapering conical shaft member 102 has extending from its upper end hollow tubular member 103 which supports at its upper end a lower roller 104.

A roller 104 is rotatably mounted upon tubular shaft 105 closed at both ends and having openings 106 in its side walls which communicate with the interior of tubular member 103.

Means for providing steam under pressure to heat this roller will now be described,

These means include a steam boiler 107 mounted upon a platform 108 carried by the braces 14. A conduit 10S extending from a source of steam connects with the boiler from the top. A steam pipe 109 extends from the lower part of boiler 107 to the lower part of member 102. A hollow copper tube 110 is connected to pipe 109 at this point and extends upwardly to the upper end of mem-v ber 103. Tube 110 has a flared upper opening 111. A valve 112 is placed in pipe line 109. When the valve is opened steam will be blown directly against the bearings for roller 104, and also through the bearing shaft 105.

to provide a finished outer appearance.

In this manner the roller will be continuously heated. A return water pipe line 115 extends from the lower part of member 102 back to boiler 107. A similar valve 116 is also provided in this line.

In treating seams with my improved mechanism I iind it preferable to provide steam under constant pressure of 5 pounds. I find that the pressure of the steam is Very important in that a greater amount may act unsatisfactorily upon the heat roller and upon the seam, in some instances causing leather to be seared or burned.

In Fig. 8 I have illustrated a modified form of upper roller 120. This roller can be used to advantage when the leather structure being worked on is of a cheaper grade or thinner grade and the principal object oi treating the seam is In using this roller the seam is inverted between the rollers, and the hammering roller works directly vupon the outer face of the leather.

vided with internal heating means and the other of said rollers subjected to a continuous pounding which is transmitted to the seam.

2. A machine of the type described for pressing sea-ms, comprising a pair of rollers, means for imparting rotary movement to one of said rollers, said rollers adapted to engage the seam therebetween, one of said rollers mormted in a stationary base and provided with internal heating means and the other of said rollers subjected to a continuous pounding which is transmitted to the seam.

3. A machine of the type described for pressing seams, comprising a suporting base, an upper and a lower roller adapted to engage the seam therebetween, a pivotally mounted bracket on said base, the upper roller mounted on said bracket,

an inverted conically shaped hollow member on said base, the lower roller mounted thereon, means for heating said second roller and means for pounding said upper roller to transmit a pounding effect to said seam.

4. A machine of the type described forpounding, pressing and heating leather seams, comprising a supporting table, a base member pivotally mounted on said table, resilient means-normally holding said base stationary, a horizontal shaft carried by said base, an upper ratchet shaped i roller mounted on said shaft, a hammering device carried by said base adapted to continuously pound on a collar associated with said lupper roller and a heated lower roller mounted on a platform directly below said upper roller, to suples port a seam between the roller in a manner subjecting the seam to the pounding action.

`5. A machine of the type described for pounding, pressing and heating leather seams, comprising a supporting table, a base member pivotally mountedV on said table, resilient means normally holding said base stationary, a horizontal shaft .vice carried by said base adapted to continuously pound on a collar associated with said upper roller and a lower roller associated with said -upper roller, said roller carried by a hollow conically shaped upright support, and means associated with said support for providing steam to heat said lower roller from its interior.

6. A machine of the type described comprising a supporting table, a base member pivotally mounted on said table, resilient means normally holding said base stationary, a horizontal shaft carried by said base, an upper ratchet-shaped roller mounted on said shaft, a hammering device carried by said base adapted to continuously pound on a collar associated with said upper roller, a shelf mounted on the side of said table, a hollow inverted cone-shaped housing thereon, a tubular member extending upwardly therefrom, a hollow horizontal shaft rigidly secured therein, a roller journalled on said shaft directly below said pounding roller and a steam conduit connected to said hollow housing for discharging steam to heat said lower roller from an internal direction.

7. A machine of the type described comprising a supporting table, a base member pivotally mounted on said table, resilient means normally holding said base stationary, a horizontal shaft carried by said base, an upper ratchet-shaped roller mounted on said shaft, a hammering device carried by said base adapted to continuously pound on a collar associated with said upper roller, a shelf mounted on the side of said table a hollow inverted cone-shaped housing thereon, a tubular member extending upwardly therefrom, a hollow horizontal shaft rigidly secured therein, a roller journalled on said shaft directly below said pounding roller, a source of steam under a proper pressure, a conduit leading therefrom to said housincr and discharge means for permitting the exit of condensed steam.

8. A machine of the type described comprising a supporting table, a base member pivotally mounted on said table, resilient means normally holding said base stationary, a horizontal shaft carried by said base, an upper ratchet-shaped roller mounted on said shaft, a hammering device carried by said base adapted to continuously pound on a collar associated with said upper roller, a shelf mounted on the side of said table a hollow inverted cone-shaped housing thereon, a tubular member extending upwardly therefrom, a hollow horizontal shaft rigidly secured therein, a roller 1ournalled on said shaft directly below said pounding roller, a steam boiler wherein steam under the desired pressure is stored, a conduit leading from said boiler and said hollow housing, and a return conduit to said boiler for condensed steam.

9. A machine of the type described for pounding, pressing, and heating leather seams, comprising a supporting table having a horizontal top, a pounding roller mechanism carried on said top upon a pivotally mounted base, a shelf adjacentsaid top supported from said table, a hollow inverted cone-shaped housing thereon, a

tubular member extending upwardly therefrom a hollow shaft journalled in said tubular member a roller positioned thereon directly below said pounding roller mechanism and a steam conduit connected to said hollow housing for discharging steam through said hollow shaft to heat said lower roller from an internal direction.

10. A machine of the type described comprising a supporting table, a base member pivotally mounted on said table, resilient means normally holding said base stationary, a horizontal shaft carried by said base, means for optionally driving said shaft, an upper ratchet-shaped roller mounted on said shaft, a hammering device carried by said base adapted to continuously pound on a collar associated with said upper roller, a shelf mounted on the side of said table a hollow inverted cone-shaped housing thereon, a tubular member extending upwardly therefrom, a hollow horizontal shaft rigidly secured therein, a roller journalled on said shaft directly below said pounding roller and a steam conduit connected to said hollow housing for discharging steam to heat said lower roller from an internal direction.

11. The combination with a seam treating device including a pair of rollers, a shaft upon which one of said rollers is mounted, and means for driving said shaft, of pounding device comprising a hammer and means for intermittently actuating said hammer to pound said shaft.

l2. The combination with a seam treating device including a pair of rollers, a shaft upon which one of said rollers is mounted, and means for driving said shaft, of pounding device comprising a hammer and means for reciprocating said hammer for intermittently pounding said shaft.

13. The combination with a seam treating device including a pair of rollers, a shaft upon which one of Vsaid rollers is mounted, and-means for driving said shaft, of pounding device comprising a hammer, means for reciprocating said hammer for intermittently pounding said shaft, and means for regulating the degree of pressure eX- erted by said hammer on said shaft;

14. The combination with a seam treating device, including a pair of rollers, a shaft upon which one of said rollers is mounted, means for imparting a rotary movement to said shaft, of means for intermittently pounding said shaft, and means for heating the other of said rollers.

l5. A seam treating device comprising a pair of shafts, a roller upon each of said shafts, means for imparting a rotary movement to one of said shafts, and means for intermittently poundingl said last named shaft.

16. A seam treating device comprising a pair of shafts, a roller upon each of said shafts, the two rollers being in peripheral relative arrangement, means for driving one of said shafts, and

means for intermittently pounding the latter shaft.

17. A seam treating device comprising a pair of shafts, a roller upon each of said shafts, the two rollers being in peripheral relative arrangement, means for driving one of said shafts, a hammer, and meansV for reciprocating said hammer for intermittently pounding said latter shaft.

18. A seam treating device comprising a pair of rollers, a shaft upon which one of said rollers is mounted, means for imparting a rotary movement to said shaft, means for regulating the pressure between said rollers, and means for intermittently pounding said shaft.

19. A seam treating device comprising a pair of rollers in peripheral relative arrangement, a shaft upon which one of Vsaid rollers is mounted, means for imparting a rotary movement to said shaft, and reciprocating means for intermittently pounding said shaft.

BENJAMIN KOZMER. 

